5G10.15 - Lodestone

Code Number:
5G10.15
Demo Title:
Lodestone
Condition:
Good
Principle:
Magnetic Forces & Fields
Area of Study:
Electricity & Magnetism
Equipment:
Lodestone.
Procedure:

This is a naturally occurring magnetic rock, although this is not very powerful it will pick up some pins and paperclips.

References:
  • Wojciech Dindorf, "Rolling Magnet", TPT, Vol. 43, # 1, Jan. 2005, p. 51.
  • Thomas B. Greenslade, Jr., "Lodestone", AJP, Vol. 77, # 8, p. 729, Aug. 2009.
  • Thomas B. Greenslade, Jr., "Lodestone  (Photo)", AJP, Vol. 73, # 1, Jan. 2005, p. 44.
  • George M. Hopkins, "Magnetism", Experimental Science, p. 347.
  • John Henry Pepper, Henry George Hine, The Boy's Playbook of Science, p. 207.
  • George M. Hopkins', "Magnetization by Lodestone", Experimental Science, Volume Two, p. 109.
  • John Henry Pepper, "Magnetism", Cyclopadic Science Simplified, p. 349.
  • Pat Murphy, Ellen Macaulay, and the staff of the Exploratorium, "Magnetic Sand", Exploratopia, p. 172.
  • Borislaw Bilash II, David Maiullo, "It All Started With Lodestones", A Demo a Day: A Year of Physics Demonstrations, p. 288.
  • Jearl Walker, "5.38, Lodestones", The Flying Circus of Physics Ed. 2, p. 236.
  • Forrest M. Mims III, "Magnet Sensor Projects - Overview", Vol. III - Electronic Sensor Circuits & Projects, p. 53.
  • The Queen Catalogues Vol. II, Catalogue of Physical Instruments, No. 5138, p. 73.

Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.